1 About

1.2 Citation

If you wish to refer to any of the material from this report please cite as:

  • Anderson, B., (2020) Air Quality in Southampton (UK): Wind and pollution roses 2016-2020 (AURN data) , Sustainable Energy Research Group, University of Southampton: Southampton, UK.

Report circulation:

  • Public

This work is (c) 2020 the University of Southampton.

1.3 Disclaimer

I usually do energy demand research but in the absence of access to real time demand data on lockdown (unlike during the World Cup) I’m looking at other things.

2 Introduction

Data for Southampton downloaded from :

The data that goes to AURN is then ratifified to check for outliers and instrument/measurement error. AURN data less than six months old has not undergone this process.

3 Wind roses

We use the excellent openair package (Carslaw and Ropkins 2012) to download the AURN data and create the wind and pollution roses for each site.

years <- c("2016", "2017", "2018","2019","2020")
sites <- c("SA33", "SOUT")

for(y in years){
  
  # wide form
  for(s in sites){
    df <- openair::importAURN(
      site = s,
      year = y,
      pollutant = "all",
      hc = FALSE,
      to_narrow = FALSE, # produces wide form data
      verbose = TRUE
    )

    # make a compass rose for this site for this year
    message("Wind rose: ", y, " (Southampton - ", s, ")")
    lab <- paste0("Southampton: ", s, " (",y,")")
    openair::windRose(df , key.header = paste0("Southampton site: ", s, " (",y,")"))
    message("Pollution rose: ", y, " (Southampton - ", s, ")")
    openair::pollutionRose(df, key.header = paste0("Southampton site: ", s, " (",y,")"))
  }

}

# done ----

4 Runtime

Report generated using knitr in RStudio with R version 3.6.3 (2020-02-29) running on x86_64-apple-darwin15.6.0 (Darwin Kernel Version 19.4.0: Wed Mar 4 22:28:40 PST 2020; root:xnu-6153.101.6~15/RELEASE_X86_64).

t <- proc.time() - myParams$startTime

elapsed <- t[[3]]

Analysis completed in 41.559 seconds ( 0.69 minutes).

R packages used:

  • here - (Müller 2017)
  • openair - (Carslaw and Ropkins 2012)

References

Carslaw, David C., and Karl Ropkins. 2012. “Openair — an R Package for Air Quality Data Analysis.” Environmental Modelling & Software 27–28 (0): 52–61. https://doi.org/10.1016/j.envsoft.2011.09.008.

Müller, Kirill. 2017. Here: A Simpler Way to Find Your Files. https://CRAN.R-project.org/package=here.